Team Sky long ago set out their stall as being whiter than white in the historically murky world of cycling, and there has been no evidence of any impropriety by any of their riders while at Sky. But two riders with links to the team are in a bit of trouble right now. Current Sky rider Jonathan Tiernan-Locke is being investigated for an anti-doping violation dating to before he joined the team, and now Michael Rogers, who rode at Sky in support of Bradley Wiggins’ 2012 Tour de France victory but left shortly after admitting his past involvement with the Doping Doctor Michele Ferrari, has been provisionally suspended for testing positive for clenbuterol.